80 79) The angles of elevation to a balloon in the
air from two points on level ground are
27" and 45". If the points are 9 miles apart
and the balloon is between the points, in
the same vertical plane, approximate, to
the nearest tenth of a mile, the height of
the balloon above the ground.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.

110

step-by-step explanation:

based on the question i am guessing that it is a typo for abc

55 because 55 + 55 = 110 good luck babe